Cognomen Lärm (Larma 
, Allarme 
, Lärm ) , around the globe, is a rare surname. The last name Lärm is habitual in Finland, where it is quite a rare surname, Croatia, and Germany, where it is a rare surname. Measured by absolute frequency, it is commonest in Bangladesh, Germany, and Finland. Very seldom, Lärm is the forename as well as the last name.